Equivalent & Substitute Parts for Cornell Dubilier Electronics 38FB4420-F

Part Overview

The Cornell Dubilier Electronics 38FB4420-F is a 20 µF film capacitor rated for 440V AC operation, utilizing polypropylene (PP) metallized dielectric technology in a radial, can-style package. This component is designed for motor run and power factor correction (PFC) applications requiring chassis mount installation with a holder or bracket.

The 38FB4420-F carries an obsolete product status. Identification of equivalent substitute parts is necessary to maintain system functionality and ensure continued availability for replacement and maintenance applications where this capacitor is specified in existing equipment designs.

Substiute Parts

38FB4420-F

Cornell Dubilier Electronics (CDE)In Stock: 103838FB4420-F Datasheet

Current PartRFQ

38FB4420A-F

Cornell Dubilier Electronics (CDE)In Stock: 95138FB4420A-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 38FB4420-F is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Capacitance value: 20 µF (exact match required)
• Tolerance: ±10% (exact match required)
• Voltage rating (AC): 440V (exact match required)
• Dielectric material: Polypropylene (PP), Metallized (exact match required)

Mechanical Parameters:

• Package type: Radial, Can (exact match required)
• Mounting configuration: Chassis Mount, Requires Holder/Bracket (exact match required)
• Lead spacing: 0.813" (20.64mm) (exact match required)
• Termination: Quick Connect, Disconnect (exact match required)

Environmental & Compliance Parameters:

• Operating temperature range: -40°C to 70°C (exact match required)
• RoHS3 compliance (required for substitution)

Substitute parts must satisfy all parameters listed above. Variations in physical dimensions (length, width, height) are permissible provided all electrical, mechanical, and environmental specifications remain identical.

Parameter Comparison

Engineering Selection Recommendations

The 38FB4420A-F is a direct equivalent substitute for the obsolete 38FB4420-F. Both components are manufactured by Cornell Dubilier Electronics within the MPF series and satisfy identical electrical, mechanical, and environmental specifications.

Selection Basis:

The 38FB4420A-F is recommended for replacement applications because:

1. Product Status: The substitute part carries Active product status, ensuring continued manufacturing availability and supply chain reliability, whereas the main part is Obsolete.

2. Electrical Equivalence: All critical electrical parameters—capacitance (20 µF), tolerance (±10%), voltage rating (440V AC), and dielectric material (Polypropylene, Metallized)—are identical.

3. Mechanical Compatibility: Lead spacing (0.813"), termination type (Quick Connect, Disconnect), mounting configuration (Chassis Mount, Requires Holder/Bracket), and package type (Radial, Can) are identical, ensuring direct physical compatibility in existing circuit designs.

4. Environmental Compliance: Both parts operate across the identical temperature range (-40°C to 70°C) and maintain ROHS3 compliance.

5. Dimensional Variation: The substitute part exhibits a minor reduction in seated height (3.160" versus 3.250"), which remains within acceptable mechanical tolerance for chassis-mounted applications using standard holder/bracket configurations.

Frequently Asked Questions (FAQ)

Q: Can the 38FB4420A-F be used as a direct replacement for the 38FB4420-F in existing equipment?

A: Yes. The 38FB4420A-F is electrically and mechanically equivalent to the 38FB4420-F. Both components share identical capacitance (20 µF), voltage rating (440V AC), tolerance (±10%), dielectric material (Polypropylene, Metallized), lead spacing (0.813"), and termination type (Quick Connect, Disconnect). The minor difference in seated height (3.160" versus 3.250") does not affect compatibility with standard chassis-mount holder/bracket systems.

Q: Why is the 38FB4420-F listed as Obsolete?

A: The 38FB4420-F carries an Obsolete product status designation. The 38FB4420A-F, which is functionally identical, maintains Active status and is the current production equivalent within the Cornell Dubilier Electronics MPF series.

Q: Are there any compliance differences between these two parts?

A: No. Both the 38FB4420-F and 38FB4420A-F are ROHS3 compliant. Both carry Moisture Sensitivity Level (MSL) 1 (Unlimited) and are classified under ECCN EAR99 and HTSUS 8532.25.0020.

Q: What applications are these capacitors designed for?

A: Both the 38FB4420-F and 38FB4420A-F are specified for motor run and power factor correction (PFC) applications requiring 440V AC operation with polypropylene film dielectric technology.

Q: Does the height difference between the two parts affect installation?

A: The 38FB4420A-F has a maximum seated height of 3.160" compared to 3.250" for the 38FB4420-F. This 0.090" reduction does not affect compatibility with standard chassis-mount holder/bracket configurations used in motor run and PFC applications.

Q: What is the lead spacing for these capacitors?

A: Both parts feature a lead spacing of 0.813" (20.64mm), which determines the mounting hole pattern on the circuit board or holder/bracket assembly.